Expansion Vessel 4.1bar 1/2 Inch With Check Valve

Prevents backflow of hot water and eliminates any possibility of cross-contamination between cold and hot. The expansion vessel, when fully charged will absorb all expanded water produced by the multipoint heater during normal operation. · · · Connection 1/2 inch BSP male (pre-charged 4.1bar) · · Integral check valve · · Protects your system from overpressure · · Extends the lifespan of your system components